1253785322 has 8 divisors (see below), whose sum is σ = 1891549476. Its totient is φ = 623268832.

The previous prime is 1253785307. The next prime is 1253785327. The reversal of 1253785322 is 2235873521.

It can be written as a sum of positive squares in 2 ways, for example, as 1199306161 + 54479161 = 34631^2 + 7381^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1253785327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1811483 + ... + 1812174.

Almost surely, 2^1253785322 is an apocalyptic number.

1253785322 is a deficient number, since it is larger than the sum of its proper divisors (637764154).

1253785322 is a wasteful number, since it uses less digits than its factorization.

1253785322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623832.

The product of its digits is 100800, while the sum is 38.

The square root of 1253785322 is about 35408.8311301009. The cubic root of 1253785322 is about 1078.3036131235.

The spelling of 1253785322 in words is "one billion, two hundred fifty-three million, seven hundred eighty-five thousand, three hundred twenty-two".